from calendar import month
import datetime
from this import d
from dateutil.relativedelta import relativedelta


# date1 = datetime.date(2013, 1, 1)
# date2 = datetime.date(2013, 7, 1)
# print(f'start:{date1}-------end:{date2}')
# while (date2.year < 2022):
#     date1 += relativedelta(months=5)
#     date2 = date2+relativedelta(months=6)
#     print(f'start:{date1}-------end:{date2}')

x = None
y = {}
if  x:
    print('not')

